分数混合运算专项练习430题(有答案)

分数混合运算专项练习430题

(1)_=N+llxE

⑹2H

15,5159-耨

(2)1x12-1x11_^.4-8+1X_L

811812(7)12812

(3)kX3"(8)7^11+2X5

o594911

(4)(9)JIXX+CXAP

20192019

竺(&2(10)12X(75%+、)

(5)131556

(11)20++（⑺/南）

(12)皂-」-3g(18)

104410割-铝

(13)87XJL(19)+(-，+

88

(14)至+5+5+互(20)(+(-))4-

99

（⑸青省.智(21)42+(+),

(16)144(22)(-)4-

(23)X++3,(29)(+)X32,

(24)12X(+),(30)4-4-

(25)X7+X7,(31)X87+12+

(26)9X-r9X(32)48X(),

(27)(+)4-(33)+[X()],

(28)X19-(34)[1-()]X

-且)

(45)3-(50)(2X100

425

(46)X+4-5,(51)X+X

(47)[-)++(52)X++

(48)+(+)X(53)(12X-7.3)-r

(54)4-[(+)X],

(49)X4-(-),(55)(X27-)X,

(56)J_X-Lxi8X-^12x(J+J)+J

13187(62)5645

(57)2X13+卫义2778xA

44(63)79

(58)入+EK5+&2-A：(刍工)

888(64)15415

(59)7X13X(-§-JJ)

(65)X4-

713

(60)款的(66)4-(+),

(67)X7+Xll,

(61)3934

(68)(74)+X

(69)(15+)X(75)XO.25+X,

(70)-X(76)25XXX

(71)13X+X15,(77)3+・X,

(72)87X(78)+[(+)+],

(73)XX32,(79)+7X

(80)X4X25X40X

(81)XX(87)

(82)(1-X)X<88)J+(4也)

898

(89)7

(83)石

(84)XX(90)1-

(86)(85)X72-X23,(91)0.25X19+5

4

(92)2x13X30(98)3-1-

15

(93)(99)4--r

74787

(94)X7.6+2.4X0.6.(100)[4-(-)]X

(95)(-)X36,(101)20X+4X,

(96)X32X(102)++4X

(97)X-X(103)23.6X10%+13.6X910%,

(104))XX8,(110)15-54-12-

(105)++,(111)15XJH-J

84

(106)10--(112)30X(2」一汉)

5615

(107)互+S-W+工(113)^X_L+40%X_§_

858551313

(108)0.25+++(114)10-(22x2)

55

(109)3-(11544XTJ

(116)[(1・1)

(122)(2-+)X12,

554

(117)12X(+),(123)X+X

(118)x+x,(124)6XXX25,

(119)1X++,(125)-X+

(120)(++)4-(126)16XX(9X),

(121)X+X(127)X[-()],

(128)6X+3.5(134)18-18X

(129)X+,(135)+4-

(136)36X(2_L)

(130)+(+)X

912

(131)-4-7+X(137)8X(36X125)

(132)7-(138)2-

41072

(133)++,(139)(1-(-2-1))+至

3212

(140)>ii4(146)0.625X36+X36-36

(141)87XN(147)(+++)X

86

(142)-1X7-^+3-X25%-1(148)++++++

4774

(143)(-Z-40%)+2x国(149)+28,

554

(144)(150)X

(145)[1-()](151)4-

(158)4x8+1

(152)16X

99

(153)J-r[(2+3X_Lj

(159)24X

54720

(154)36X-?XAX42(160)[1-(+)]+

772

(161)(-)X45,

(156)&X苣+1X出(162)+-X

7447

7二2二7

(157)(163)4-7+X

838

(164)X9+(170)18X(+),

(165)2-4-(171)+++

(166)(+)X24,(172)--

(167)100-23.75-76(173)X[4-(-)],

(168)3++3+(174)48X+3+7,

(169)7+8.9+2+6.1,(175)-(-),

(176)(182)

(177)-(+),(183)

(178)15-5+12-(184)

(179)-+-(185)12X(22)

36

(180)++(186)24X工苣

368

(181)(187)7X5二21

101632

(188)86X-1(194)

855124

(189)月乂工+工+7(195)互+_工+工

177176122

(190)2:(揖2)(196)-(1-1)]

545334

(191)+5+X(197)44-1.254-8

(198)-^X_L+_§.X-^

(192)(-)4-

913139

(193))X(+),(199)

(200)2-(206)-4-7+X

(201)-(-),(207)X-i-

(202)+(-),(208)36X(+-

(203)+(+X),(209)X58+42+8,

(204)4-[X(+)],(210)4--

(205))4-(211)(15-14X)X

(212)-r--r,(218)1.75X+X+

(213)24X(+),(219)87X且

86

(214)(X)+(220)

61518

(215)(+)X9X17,(221)24X(卫+工+旦

8612

1+5+2XJ：

(216)+X(222)

335

(223)2x0.375+E

(217)3-1-F(+X),

97

(224)(2-且)X(-?+1)(230)6-2+1

41693

(225)(231)5X32X12.5,

3934

(226)3-2(232)X

2217

(227)-l-r[l-r(2一旦](233)()X(1+),

6510

(228)4-13+X(234)()X+,

(229)X4-X,(235)32-17.5-2.5,

(236)X55(242)・X

(237)+5XX5,(243)+[()X],

？

(238)(-)X8-?(244)ol-7-)X2I-

4522

1侬二室

(239)-4-7+X(245)209-19*195乂3.0n0o3s

(240)1204-[-(1-)],(246)-4-3A

12

(241)(-)4-(247)

1021,12

(248)2x(1Z-J)(254)244-6,

4189

(249)4X[(至+2)+6](255)1X7-i-lX7,

63

(250)JxJ-+J4-15(256)()X35,

7157

(251)(6-工义32)+至(257)4XXX

84

(252)(258)

(253)12-5・4,(259)+X+

(260)26X(-)4-(266)204-[1-(+)],

(261)(-+)4-,(267)[2-(-1.5)4-]X

(262)X+X+3+19,(268)540+12X9+482

(263)++X(270)(),

(264)(-+)X24,(271)75%X2.5,

(265)X+1.25X+125%,(272)

(273)24-(2.2+0.2)6.9,(279)3-

(274)0.5,(280)X+4-7,

(275)(281)19H-[(+)X],

(276)(282)[7.8+X(2.75+1.25)],

(277)(283)[()-?],

(278)()X24,(284)4-X

(285)(7.5+35X(291)(-)4-+

(286)X6.3-X4.9,(292)19+(+),

(287)[+(-)]+40幅(293)55・11,

(288)叫管耳(294)0.6X+60%X+X

(2.9+3.1)X2出

(289)(295)(+-)X24,

37

(290)2X(296)5X(+)

(297)),(303)1-

(298)++,(304)(),

(299)(305)4++

(300)(306)2,

(301)(307)98+(),

(302)+(),(308)24+24X

(309)(+)X48,(315)X)

(310)12・25,(316)(+)X32,

(311)十(317)X+X

(312)+23+X(318)

(313)++(319)88X(+),

(314)X34-(320)XX16,

(321)+X(327)X+4-

(322)44-72X,(329)(328)++X

(330)

(323)

+(+),

(324)X16X(330)

(325)+12+(331)(25+)X4,

(326)4-[(-)X24],(332)(15-14X)小

(333)()X84-(339)+)X84+101,

(334)+14-(-),(340)3.5X1+0.35X10+2X350%,

(335)(+-)X24,(341)[2+(3.4-2)X4.5]+1

(336)+(-)X,(342)

(337)0.625X9.6+62.5%X(343)78-4.5-22-45-^

(338)9+99+999+9999+X4,(344)2-(6得-2.5)+3

X乙

5

(345)-1x1+0.25义,得(351)22一分

8

(346)6-&X」-1(352)299+(299+—)

326300

」」））一

(347)(1-(353)琮-申］xJ

12188

(348)i-B-ii(354)3.6X23+16.9+(3-？Xl.16)XI.3

255

(349)$7《乂（(355)L1+1…1

1x22x33x499x100

(350)5+3.6X2.54-0.48(356)4-X

(357)(-+)X12,(363)X4-(-),

(358)7X4-7X,(364)X3.6+5.2X0.5+1,2X50%,

(359)1.5X-X(365)[-(+)]-r

(360)(-)(366)11.32-(7+1.32),

(361)X+-r(367)89X

(362)74-:7,(368)4-4-

(369)4-4X(375)0.42X1+3

(370)4-+X(376)14-3.6X

(371)(377)15X7+3+

(372)X(+)-?(378)3-X3.6,

(373)[-(+)]-?(379)XI4-3

(374)(-+)X42,(380)0.44+++0.6,

(381)+2X2-24-(387)25X工X2=卫:

2759

(382)(4-2)4-(1+2.4),(388)Wx&X卫二

4151313

(383)4820U-156X720-5-39,(389)

515

(384)(3.064-0.25+2.76)X0.2,(390)X-r

(385)[3+(3-2.4X)]X0.2,(391)154-X,

(386)(392)

(393)(399)X

(394)-(+),(400)

(395)+++(401)

■■

(396)义+X,(402)

(397)X13-(403)+)X

(398)4-(X(1-)),(404)13.24-(3.2X3-0.8),

(405)()X12],(411)XX

(406)X45++(412)+[(+)X],

(407)-X(413)(+X）十

(408)(+)4-,(414)-r+X,

(409)(X+)4-(11-),(415)+X+,

(410)XXX(416))4-

(417)工(1-1)(423)X

939

(418)至X[E-](424)1-4-

94164

81156

m+2x工

95gli

(421)5.58--5+5.42--?(427)

(422)999+99+9(428)X(+)+

(429)+

(430)44,

分数混合运算专项练习430题参考答案:

(1)_£=g+A2x至(8)_Z.X+_?X工二1-下

15・5159949116

=X+X,=x+,=工

卫’

=(+)X,

=28,10.

=1X,9999(17)1+

)

9

一_5-,38-■

999=43出

(2)」x卫-2x11(9)Nx3+工xAP949

81181220192019—

=(+)x,994

=-=1X,=1+2

=215.一,3•4

35220

二1工

(3)义X3-r-(10)12X(75%+-^)4

556(18)工△二三

=XX3,=12X(+),12%4^2

=12：=12X+12X,

-,,7f,__5_\r一3一_)

(4).=9+10,121284

=1.6X,；

=19=1+(乜-2)

=3.(11)204-+.88

竺=20XX,1+1

(5)13155=20X(X),8

-_342=20X,11

133=308

(12)・・+,(19)+)4-

=102_26

3939=(+)-(+),)土,

=2-1,

=1再

39=1:XX3,

(6)2-^4--L-1(13)87X,=5：

8167=(88-1)X,(20)(+(-))+

=2-(JxA^-1)二7-,=(+(-))+,

=(+)4-

877=6里

=(+)4-

0（衿88

(14)4-5+54-,

=2-1=X+5X,X

=1；=⑼,5

至《8+」X-L24

(7)12812为(21)424-(4-)

(15)+(-X),=42,

,5X1,lx7

128812=+（-）,=15：

=(-5-+-L)xA=x,(22)()+>

12128:3

-1--.:--3-'

=1x110,84

8(16)2一至J,1

,136n

(23)X+4-3,

336X(),

=XI,—_1•=2+(),

,32=2+2,

一

7(35),=4乜

(24)12X(+),=24X+56X,5

=12X,=(24+56)X,(44)X+X,

=56；二80X,=X(+),

(25)X7+X7,=30—,—6.•

=(+)X7,⑶噎x"13

=1X7,(45)3--

=7；=X+X,=3-(+),

(26)9X4-9X,=(+)X,=3-1,

=14-9X,=1X,=2：

=x,(46)X+4~5,

-_4•

=X+X,

二15

瓦

(=X(+),

37)1+(1^1)

(27)(+)4-,45

—,1-™«•

=+,=1+»5

=X,,4(47)(-)++,

,75=X2+,

=+，

5(38)96X(——J-

(28)X19-,16多7=1:

=X(19-1),=96X,(48)+(+:X,

=X18,=21；=+X,

=13；=+，

(39)87X—